— AI will play as important role in the future.
— __________. I couldn’t agree more.
A.Exactly B.Especially C.Probably D.Generally
九年级英语单选题简单题
— AI will play as important role in the future.
— __________. I couldn’t agree more.
A.Exactly B.Especially C.Probably D.Generally
九年级英语单选题简单题查看答案及解析
I don’t know if AI technology ________ a more important role in people’s future life.
A.plays B.will play C.has played
九年级英语单选题中等难度题查看答案及解析
—The Silk Road will play a more important role in the future.
—__________. I couldn’t agree more.
A.Exactly B.Especially C.Probably D.Generally
九年级英语单选题中等难度题查看答案及解析
As a student, books play an important role in our life. As Gorky once said, “Books are the ladder of human progress.” Then which book is your favorite?
As a book lover, my favorite book is Robinson Crusoe. This book is 1.（写）by Daniel Defoe, and it has already 2.（影响）lots of students like me. Every time I read it, I see a tall and strong image of Robinson. The 3.（整个的）book tells the stories of his adventures and courage. He is such a brave man that I4.(钦佩) him so much. When Robinson was young, he dreamt of sailing on the sea day and night. Unfortunately, after his grown up, he 5.（实际上）lived on a desert island for twenty-eight years. He6.（经受）a lot. But the idea of 7. up（放弃）never came to his mind. During these years, he had to endure hunger, fight against 8.（自然的）disasters, and overcome many 9.（困难）. But the great man went out of the desert island at last because of his fighting 10.（精神）, and hard-working attitude. That story encouraged me deeply. Our life cannot be lucky all the time. But no pains no gains. And only hard work can lead us to a better life.
九年级英语单词填空困难题查看答案及解析
Everyone can play an important role in the society. As members, we should try our best to do________.
A.what we should do B.what shuuld we do
C.how we should do D.how we should do
九年级英语单选题中等难度题查看答案及解析
Everybody makes decisions in daily life. They can be as important as what you will do in the future or as simple as what you will eat for breakfast. Any decision could be the turning point of your life.
I made an important decision when I was in Junior 3.
Before I made that decision I wasn’t a good student. I didn’t listen to my parents or teachers, and my grades became poor. Then came the high school entrance exam.
At the turning point of my life, my mom wanted to have a conversation with me. I felt impatient but when I looked at her eyes, I felt I couldn’t refuse. Instead of asking me to study hard, to my surprise, Mom just asked what I wanted to do in the future. Without thinking too much, I just said I would like to study hard.
Mom smiled and asked again: “I asked: what do you WANT to do?”
I had never seriously thought about the question before. So, I kept silent.
“Whether you want to go on studying or enter the society,” she went on, “it is your own decision. It should be made by yourself, not anyone else, including me. ” After saying that, she had tears in her eyes.
For the first time in my life I was asked to make my own decision. I sat in my chair and thought about my life, my future and what kind of person I wanted to become.
It took me what seemed to be ages to make the biggest decision so far in my life—I wanted to be a man who makes a difference in the world. To achieve that, I needed to study hard.
The path to my future became clear to me. I didn’t act rebelliously(叛逆地) any more. With passion (激情) in my heart, I studied hard.
Now, I’m 17 and I’m in one of the best schools in my city, in one of the best classes at the school and I am one of the best students in the class.
Thanks to that decision, I have become what I am today.
1. When did the writer make the important decision?
A. After he was 17 years old.
B. After he was in one of the best classes.
C. When he was a pupil.
D. When he was studying in Junior 3.
2.What was the writer like before the decision?
A. He didn’t do well in his lessons
B. He was a good student.
C. He was one of the top students in his class.
D. He did what his teachers and his parents asked him to do
3.How did the writer make the decision?
A. It was easy for him to make the decision.
B. It was his second time to make the decision.
C. He made the decision seriously.
D. It was his mother that made the decision for him.
4.Why did the writer make the decision?
A. Because his teacher talked with him patiently.
B. Because he didn’t want to act rebelliously any more.
C. Because his mother asked him to study hard as usual.
D. Because his father asked him to think about his future by himself.
5.Which of the following is TRUE?
A. The writer made the decision that he should work hard.
B. It took the writer several years to make the decision.
C. After hearing his mother’s words, the writer had tears in his eyes.
D. At the turning point of his life, the writer wanted to have a conversation with
九年级英语阅读理解中等难度题查看答案及解析
Everybody makes decisions in daily life. They can be as important as what you will do in the future or as simple as what you will eat for breakfast. Any decision could be the turning point of your life.
I made an important decision when I was in Junior 3.
Before I made that decision I was one of the boys who tried too hard to act as an adult. I didn’t know that only kids want to show themselves as adults.
I didn’t listen to my parents and teachers, and my grades became poor. Then came the high school entrance exam.
At the turning point of my life, my mom wanted to have a conversation with me. I wanted to turn it down but when I looked at her eyes, I felt I couldn’t refuse. Instead of asking me to study hard, to my surprise, Mom just asked what I wanted to do in the future. Without thinking too much, I just said I would like to study hard.
Mom smiled and asked again: “I asked: what do you WANT to do?”
I never seriously thought about the question. So, I kept silent.
“Whether you want to go on studying or enter the society,” she went on, “it is your own decision. Your life ought to be decided by you, not by anyone else, including me. ” After saying that, she had tears in her eyes.
For the first time in my life I was asked to make my own decision. I sat in my chair and thought about myself, my life and what kind of person I wanted to become.
It took me what seemed to be ages to make the biggest decision so far in my life—I wanted to be a man who makes a difference in the world. To achieve that, I needed to study hard.
The path to my future became clear to me. I didn’t act rebelliously(叛逆地) any more. With passion (激情) in my heart, I studied hard.
Now, I’m 17 and I’m in one of the best schools in my city, in one of the best classes at the school and I am one of the best students in the class.
Thanks to that decision, I have become what I am today.
1.When did the writer make the important decision?
A. After he was 17 years old.
B. After he was in one of the best classes.
C. When he was a pupil.
D. When he was studying in Junior 3.
2.What was the writer like before the decision?
A. His grades became poor.
B. He tried too hard not to act as an adult.
C. He was one of the top students in his class.
D. He did what his teachers and his parents asked him to do.
3. Why did the writer make the decision?
A. Because his teacher talked with him patiently.
B. Because he didn’t want to act rebelliously any more.
C. Because his mother asked him to study hard as usual.
D. Because his father asked him to think about his future by himself.
4.Which of the following is TRUE?
A. The writer made the decision that he should work hard.
B. It took the writer several years to make the decision.
C. After hearing his mother’s words, the writer had tears in his eyes.
D. At the turning point of his life, the writer wanted to have a conversation with his mother
九年级英语阅读理解中等难度题查看答案及解析
Bacterial Quorum Sensing
Bacteria(细菌)play an important role in our lives. They can keep us alive as well as make us sick. It wasn’t until fairly recently that we learned bacteria can communicate with one another.
In the 1960s, researchers found that a kind of bacteria called Vibrio fischeri（费氏弧菌） produced no light when they were alone, but that they exhibited great amount of light as the bacterial population grew to a certain number. How did this happen? How can Vibrio fischeri tell the difference between times when they’re alone and times when they’re in a community, and then all do something together?
Researchers found they talk to each other with a chemical language—signal molecules(信号分子). Vibrio fischeri makes signal molecules, and it also has a receptor on its surface that fits like a lock and key with a signal molecule. As the bacteria increase, more and more signal molecules are sent into the environment. When signal molecules increase to a certain amount, they lock down into those receptors and information comes into the bacteria, which tells them how many neighbors there are. As soon as they realize the population has hit the certain number, all of the bacteria behave as a group, making light together. In the past ten years, researchers have found all bacteria have systems like this: they make and recognize chemical words, determine(判断)the size of the community, and carry out tasks that would be unsuccessful if a single one were to act alone. This process is called quorum sensing.
Most of the time, bacteria live with thousands of other species (种类)of bacteria. There has to be a language of interspecies communication. In fact, bacteria have another kind of signal molecule, which is the common language used by all species. Moreover, this kind of molecule has its own receptor. In this way, bacteria are able to count different populations, and then they decide what task to carry out depending on which species has the greatest population.
Knowing how bacteria communicate could influence how we fight disease. What if bacteria can’t talk or hear? They won’t recognize when there are enough bacteria and when to exhibit the group behavior to make us sick. Researchers are developing a method—to make molecules that look like the real ones and then they lock into the receptors to jam recognition of the real situation.
On the other hand, researchers also improve the conversation of the beneficial bacteria, so they can do things that we want them to do better than they would do on their own.
1.According to the passage, what can we learn about quorum sensing?
A.Quorum sensing may happen when there is only one Vibrio fischeri.
B.Signal molecules are kept away from receptors during quorum sensing.
C.Most bacteria have similar systems to make light during quorum sensing.
D.Bacteria carry out a group task when their population hit a certain number.
2.What can we learn from the passage?
A.The more species there are, the more group actions bacteria will take.
B.In different environments, bacteria have different interspecies languages.
C.Beneficial bacteria communicate better by themselves than harmful ones.
D.To fight disease, researchers try to turn off the communication between harmful bacteria.
3.The passage is mainly about ________.
A.why bacterial population grows B.how bacteria communicate with each other
C.which bacteria help fight disease D.what scientists do to find quorum sensing
九年级英语阅读单选中等难度题查看答案及解析
Friends play an important role in our life. Most people hope that their friends will always be there. They _____ friendship to last forever. _____， even the best friendship can end.
As time goes by, many friendships end because of a(n) _____ in personality or way of life. The friendship slowly loses importance and finally _____.
Tommy wrote, “I didn't even know the friendship was over until I caught myself thinking of Alan as a former friend.”
Peter explained, “We _____ seeing each other less and less. The friendship was over.”
Sometimes friendships _____ suddenly from a disagreement or moving to another place.
Alice said, “The end of our friendship was a gradual thing. I moved from one side of the city to the other. Since then we _____ made a phone call. We met less and less. At last our friendship ended.”
Jack said, “When I moved to Seattle after college, our friendship died. Both of us were always_____ with new jobs, so we didn't keep _____ touch with each other. Our friendship was so dead that I didn't call him ______ I went home.”
Yet the biggest problem to a friendship is change. Lillian Rubin in her book Just Friends says, “Generally it's ______ that friends will accept each other if they both remain what they were when they met, or change in similar directions. If they change or grow in different ways, the friendship most likely ______ lost.”
No matter why, when, or how friendship ends, there is always ______ pain of loss. When nothing can be ______ to keep the friendship, it is important to forget the pain. Then move on ______ new friendships.
May new friendships bring you pleasure and happiness!
1.A. hope B. expect C. decide D. prefer
2.A. Unfortunately B. Luckily C. Then D. So
3.A. interest B. experience C. change D. suggestion
4.A. forgets B. disappears C. appears D. improves
5.A. finished B. practised C. continued D. started
6.A. break down B. break away C. break off D. break in
7.A. often B. seldom C. always D. never
8.A. struggling B. satisfying C. pleased D. fed
9.A. at B. by C. on D. in
10.A. even if B. while C. before D. since
11.A. strange B. true C. false D. impossible
12.A. will be B. is C. will D. to be
13.A. little B. some C. any D. no
14.A. thought B. checked C. carried D. done
15.A. to ask for B. forming C. to build D. beginning
九年级英语完型填空困难题查看答案及解析
Friends play an important role in our life. Most people hope that their friends will always be there. They friendship to last forever. , even the best friendship can end.
As time goes by, many friendships end because of a(n) _ in personality or way of life. The friendship slowly loses importance and finally_ _.
Tommy wrote, “I didn’t even know the friendship was over until I caught myself thinking of Alan as a former friend.”
Peter explained. “We _ seeing each other less and less. The friendship was just over.”
Sometimes friendships_ _ suddenly from a disagreement or move to another place.
Alice said, “The end of our friendship was a gradual thing. I moved from one side of the city to the other. Since then we _ made a phone call. We met less and less. At last our friendship ended.”
Jack said, “ When I moved to Seattle after college, our friendship died. Both of us were always_ with new jobs, so we didn’t keep _ touch with each other. Our friendship was so dead that I didn’t call him _ _ I went home.”
Yet the biggest problem to a friendship is change. Lillian Rubin in her book Just Friends say, “Generally it’s _ _ that friends will accept each other if they both remain what they were when they met, or change in similar directions. If they change or grow in different ways, the friendship most likely lost.”
No matter why, when, or how friendships end, there is always _ _ pain of loss. When nothing can be _ to keep the friendship, it is important to forget the pain. Then move on _ _ new friendships.
May new friendships bring you pleasure and happiness!
1.A. hope B. expect C. decide D. prefer
2.A. Unfortunately B. Luckily C. Then D. So
3.A. interest B. experience C. change D. Suggestion
4.A. forgets B. disappears C. appears D. improves
5.A. finished B. practiced C. continued D. started
6.A. break down B. break away C. break off D. break in
7.A. often B. seldom C. always D. never
8.A. struggling B. satisfying C. pleased D. fed
9.A. at B. by C. on D. in
10.A. even if B. while C. before D. since
11.A. strange B. true C. false D. impossible
12.A. will be B. is C. will D. to be
13.A. little B. some C. any D. no
14.A. thought B. checked C. carried D. done
15.A. to ask for B. forming C. to build D. beginning
九年级英语完形填空极难题查看答案及解析